这种SIS混频接收机性能可靠，且可用闭合循环氦制冷机冷却，在4.3 K温度操作即可达到好的噪声性能。
This SIS mixer receiver is reliable, and can achieve good noise performance even operated at 4.3k temperature with a close cycle helium refrigerator.
仿真结果还表明，氦制冷系统的动态仿真结果可以对优化氦制冷机试车方案、节省调试费用、节约调试时间、进一步提高氦制冷机制冷效率提供可靠的理论基础。
The dynamic simulation result also indicates that the trial-run scheme of helium refrigerator can be optimized and the debugging cost and time can be saved though dynamic simulation.
进行了微型同轴脉管制冷机系统运行参数的优化及氢氦混合工质应用的试验研究。
The optimization of the operational parameters and the experimental study with helium-hydrogen mixture on the miniature co-axial pulse tube refrigerator are carried out.
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